compatible mem upgrade ?

[solb8]

Hello.
My brother thinking about small upgrade.

his setup:
Geil 2GB DDR2 PC6400 800MHz Ultra
4-4-4-12 Metallic-Orange Aluminum Retail (2x1Gb)

GIGABYTE GA-P35-DS4 Silent Pipe
ATX,8xSATAII,GbLAN,2xPCI-E*16,ICH9R

gpu: old gforce

cpu; q6600


The upgrade would be 2gb more ram, and a new gpu

could i just buy 2gb of PC6400 800MHz and it will work together with the geil ?

like CORSAIR 2GB DDR2 XMS2 PC6400 800MHZ CL5 (2X1GB)
http://www.dustinhome.no/pd_5010092991.aspx

Its recomended to inst win7 on a system like this ?

 

[Sp12]

That build with 2 gigs of ram and a new vidcard would be surprisingly fresh.

I'm no DDR expert, so I'll let someone else vouch that it'll work, but it seems fine.

 

[mfenn]

The new RAM should be fine, but the current RAM will need to be bumped down to CAS 5 to match the new (no big deal IMHO). Windows 7 will run very well on that system.